2005542047 has 2 divisors, whose sum is σ = 2005542048. Its totient is φ = 2005542046.

The previous prime is 2005542023. The next prime is 2005542103. The reversal of 2005542047 is 7402455002.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2005542047 - 2²² = 2001347743 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2005572047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1002771023 + 1002771024.

It is an arithmetic number, because the mean of its divisors is an integer number (1002771024).

Almost surely, 2^2005542047 is an apocalyptic number.

2005542047 is a deficient number, since it is larger than the sum of its proper divisors (1).

2005542047 is an equidigital number, since it uses as much as digits as its factorization.

2005542047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11200, while the sum is 29.

The square root of 2005542047 is about 44783.2786539798. The cubic root of 2005542047 is about 1261.0837335598.

Adding to 2005542047 its reverse (7402455002), we get a palindrome (9407997049).

The spelling of 2005542047 in words is "two billion, five million, five hundred forty-two thousand, forty-seven".